Ultrasonic Inspection of Rubber Sonar Dome Windows

dc.contributor.author Alers, George
dc.contributor.author Fortunko, C.
dc.date 2018-02-13T17:29:54.000
dc.date.accessioned 2020-06-30T01:28:27Z
dc.date.available 2020-06-30T01:28:27Z
dc.date.copyright Tue Jan 01 00:00:00 UTC 1980
dc.date.embargo 2013-11-15
dc.date.issued 1980-07-01
dc.description.abstract <p>By using a rubber window acoustically matched to sea water, the Sonar system on a destroyer can be made considerably more sensitive. However, if the layered construction of the window develops delaminations while in service, the hydrodynamic characteristics of the structure may become modified and acoustic noise can be generated during high-speed operations. In order to inspect for these delaminations while the ship is tied up to its dock, a pulse-echo ultrasonic scan performed by a diver using a sea-water coupled transducer would appear to be ideal. However, the choice of acoustic parameters suitable for inspecting rubber were unknown. Laboratory studies sho1~ed that by utilizing very short time duration pulses whose center frequencies lie between 0.5 and 1.0 Mhz, it was possible to detect water-filled pockets within 0.2 inches of the outer surface of the window. A prototype instrument suitable for shipboard and dry dock operation has now been constructed. This instrument features optimized pulse excitation of low-frequency broad band transducers when attached to 50 to 100 feet of coaxial cable. A signal light is also incorporated to provide the diver with information on the condition of the rubber window under his transducer.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/cnde_yellowjackets_1979/28/
dc.identifier.articleid 1030
dc.identifier.contextkey 4825984
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath cnde_yellowjackets_1979/28
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/16066
dc.language.iso en
dc.relation.ispartofseries Interdisciplinary Program for Quantitative Flaw Definition Annual Reports
dc.source.bitstream archive/lib.dr.iastate.edu/cnde_yellowjackets_1979/28/1979_YellowJacket_030_Alers_UltrasonicInspection.pdf|||Fri Jan 14 23:08:38 UTC 2022
dc.subject.disciplines Materials Science and Engineering
dc.subject.keywords Nondestructive Evaluation
dc.title Ultrasonic Inspection of Rubber Sonar Dome Windows
dc.type article
dc.type.genre 07_nonmetallic_nde_acoustic_microscopy
dspace.entity.type Publication
relation.isSeriesOfPublication 43920e40-d127-4f4c-9087-dc709815fe7f
Original bundle
Now showing 1 - 1 of 1
163.86 KB
Adobe Portable Document Format